<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <style type="text/css">
        input{
            box-sizing: border-box;
            -webkit-box-sizing: border-box;
            -moz-box-sizing: border-box;
            width:100%;
        }
        div{
            width: 1200px;
        }
    </style>
</head>
<body>
<!--border代表有无边框，没有border或border='0'-->

<!--
难点，
1.内容换行，内容挤压
2.表格嵌套表格，嵌套其他元素
3.thead tbody tfoot含义
-->
<div>
    <input type="text">
</div>
<p>    hello</p>
<p><br></p>
<p>&nbsp;&nbsp;&nbsp;hello</p>
<b>hello hello

</b>
<script src="https://cdn.staticfile.org/jquery/1.10.2/jquery.min.js">
</script>
<script type="text/javascript">


</script>
</body>

</html>